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T: Fachverband Teilchenphysik
T 86: DAQ, trigger and electronics IV
T 86.1: Vortrag
Donnerstag, 2. April 2020, 16:30–16:45, L-3.015
Design of the Event Builder for the OSIRIS pre-detector of JUNO — •Runxuan Liu1,2, Christoph Genster1, Kai Loo4, Livia Ludhova1,2, Alexandre Göttel1,2, Yu Xu1,2, Yuhang Guo1,3, Philipp Kampmann1,2, Giulio Settanta1, and Cornelius Vollbrecht1,2 — 1Institut für Kernphysik, Forschungszentrum Jülich, Jülich 52428, Germany — 2III. Physikalisches Institut B, RWTH Aachen University — 3School of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China — 4Johannes Gutenberg-University Mainz, Institute of Physics, 55128 Mainz, Germany
JUNO is a 20 kt liquid scintillator detector under construction in Jiangmen, China, whose goal will be to determine the neutrino mass hierarchy. In order to meet the stringent requirements on the radiopurity of the liquid scintillator, the OSIRIS pre-detector is being designed to monitor the liquid scintillator during the several months of filling the large volume of JUNO. OSIRIS will contain 20 ton of scintillator and will be equipped with 76 20-inch PMTs. The DAQ system will have no global hardware trigger: instead, each PMT will provide a data-stream composed of the waveforms, each containing a gps time stamp. Based on the latter, dedicated offline trigger software will organize individual waveforms into events. This talk will discuss the optimization of the event builder trigger conditions, considering the expected rates of different backgrounds and the PMTs dark rate and using the OSIRIS simulation software.